Editing 1621 (section)

=== January&ndash;March ===
* [[January 16]] &ndash; [[Magnus Celsius]], Swedish astronomer and mathematician (d. [[1679]])
* [[January 27]] &ndash; [[Thomas Willis]], English doctor who played an important part in the history of anatomy (d. [[1675]])
* [[January 30]] &ndash; [[George II Rákóczi]], Hungarian nobleman (d. [[1660]])
* [[February 2]] &ndash; [[Johannes Schefferus]], Alsatian-born humanist (d. [[1679]])
* [[February 4]] &ndash; [[Frederick, Burgrave of Dohna]], Dutch officer, and governor of Orange (d. [[1688]])
* [[February 14]] &ndash; [[Sibylla Schwarz]], German poet (d. [[1638]])
* [[February 20]] &ndash; [[Erzsébet Thurzó]], Hungarian noblewoman (d. [[1642]])
* [[February 21]] &ndash; [[Rebecca Nurse]], Massachusetts colonist, executed as a witch (d. [[1692]])
* February &ndash; [[Lamoral II Claudius Franz, Count of Thurn and Taxis]], Postmaster General of the Holy Roman Empire (1646–1676) (d. [[1676]])
* [[March 1]] &ndash; [[John Alleyn (barrister)|John Alleyn]], Cornish barrister (d. [[1663]])
* [[March 2]] &ndash; [[Louis Günther II, Count of Schwarzburg-Ebeleben]] (1642–1681) (d. [[1681]])
* [[March 9]] &ndash; [[Egbert van der Poel]], Dutch painter (d. [[1664]])
* [[March 16]] &ndash; [[Georg Neumark]], German poet and composer of hymns (d. [[1681]])
* [[March 24]] &ndash; [[John VI, Prince of Anhalt-Zerbst]] (1621–1667) (d. [[1667]])
* [[March 26]] ''(bapt.)'' &ndash; [[Jacob van der Ulft]], Dutch painter (d. [[1689]])
* [[March 27]] &ndash; [[Margrave Charles Magnus of Baden-Durlach]] (d. [[1658]])
* [[March 28]] &ndash; [[Heinrich Schwemmer]], German music teacher and composer (d. [[1696]])
* [[March 31]] &ndash; [[Andrew Marvell]], English metaphysical poet and politician (d. [[1678]])<ref>{{cite book|title=Andrew Marvell, Poet & Politician, 1621-78: An Exhibition to Commemorate the Tercentenary of His Death, British Library Reference Division, 14 July-1 October 1978|url=https://books.google.com/books?id=wLoIAQAAIAAJ|year=1978|publisher=British Museum Publications for the British Library|isbn=978-0-7141-0395-2|page=9|language=en}}</ref>